From 8 p.m. Friday to 6 a.m. Monday, NorthGate Constructors will begin permanent striping on the northbound SH 121 main lanes as part of the I-635/SH 121 Interchange project. This will allow crews to further advance work in the area towards final completion.

The following closure is needed to safely conduct the work:

Northbound SH 121 at I-635 Striping from 8 p.m. Friday to 6 a.m. Monday:


  • Full closure on northbound SH 121 at I-635. Traffic will detour to eastbound I-635, then Royal Lane.

Drivers should plan accordingly during this work and add extra time to their commute. Drivers are encouraged to visit to stay up-to-date on all major upcoming operations along the project. Please note all construction work is dependent on weather conditions.

The $371 million I-635/SH 121 Interchange project will increase capacity and connectivity between I-635, SH 121, SH 26 and FM 2499. The improvements were included in the original $1.6 billion DFW Connector project, but funds were not available at that time to deliver the entire scope. These improvements are now funded as part of the Texas Department of Transportation’s Texas Clear Lanes initiative, which aims at improving congested corridors across the state.

For information about construction of the DFW Connector, including all current and upcoming lane closures, visit, or call the toll-free hotline at 877-411-4212. The DFW Connector can also be found on Twitter (@DFWConnector) and Facebook (DFW Connector Project). For information about the Texas Clear Lanes initiative, visit

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